Hi Ya MrAl,
Most of what I worked with was low frequency stuff and in my lab I had several larger versions of those boards. Every time we had the technicians build a prototype they were done on those boards and as far as I know since my retirement they still are. Most were mounted in large sections on a plate that also had fused +5, +15 and -15 volt power supplies. When the boards wore out they were replaced on the plates. Those little boards were a real good deal Mr. Al. The bottoms could likely be fitted with that double stick sided foam automotive tape so several could be laid out on a metal plate (ours had screws). I used them as a regular part of development.
Ron